- Sony Corporation
- Skullcandy Inc.
- Sennheiser Electronic GmbH & Co. KG (Sennheiser)
- Harman International Industries
Incorporated
- Bose Corporation
- Zebronics India Pvt. Ltd.
- Koninklijke Philips N.V. (Philips)
- Panasonic Corporation
- Pioneer Corporation
- Apple Inc.
- Grado Labs.
- JABRA Corporation
- V-MODA
LLC
- Shure Incorporated.
- Shenzhen Cannice Technology Co.Ltd.
- Yamaha Corporation.
- Beyerdynamic GmbH & Co. KG